Konstantinos Margetis

BSc in Sports Science

(National Kapodistrian University of Athens)

Apnea Academy & AIDA International Assistant Instructor

Konstantinos was born on April 20, 1972. His swimming career took off at the age of 7, as a junior competitive swimmer for the Athens Athletic Club (A.O.A.) team. He is a University of Athens Physical Education and Sport Science graduate. Given his youthful passion for spearfishing and his profound love for the water, it comes as no surprise that he was soon drawn to freediving. In 2011, he obtained both the Open Water and Advanced Open Water Diver scuba diving diplomas, at Antonis Seitanidis’ “Vithos” (Greek for “seabed”) diving school.

In 2017, he graduated from Apnea Academy as a third-level student, having successfully completed his first two levels next to Roberto Calich (the largest freediving school in Greece at the time) and the third at Dimitris Koumoulos’ Onebreath Freediving.

In 2018, he become an Apnea Academy Assistant Instructor. He credits both Roberto and Dimitris as his mentors.

This is how his semi-professional freediving career began.

A member of AIDA Hellas since 2017, he has participated uninterruptedly at pool and depth championships, earning several distinctions. In 2017-18 he was also briefly elected as secretary of the AIDA Hellas board, a post from which he resigned in 2018, for personal reasons.

He is a licensed RTI (Rescue Training International) provider of CPR-AED (automated external defibrillator) use and has also acted as a safety diver in countless freediving – pool and depth – competitions.

In February 2022, he was certified as a CMAS International Judge for both pool and depth competitions, after successfully completing the respective course. He has served as such, in several competitions, Panhellenic Championships and World Cups. More recently, as a Chief Judge at the Authentic Big Blue CMAS Depth World Cup (Mytikas, Greece – August 2024). He was assigned the position of Second Judge in this year’s top-level freediving event, the upcoming CMAS World Depth Championship (Kalamata, October 2024).

Throughout the years, he has competed in various events, namely: The AIDA Hellas pool championships of 2017 & 2018, the 2017 AIDA Hellas depth championship as well as the CMAS-EOYDA (Hellenic Federation for Underwater Activities and Sportfishing) 2020, 2022, 2023 and 2024 Panhellenic pool championships.

Most notably, he has so far won 1 gold, 7 silver and 3 bronze medals, all in Dynamic Apnea without Fins (DNF) and Constant Weight without Fins (CNF), the most challenging freediving disciplines, due to the physical effort required to swim unassisted in a single breath.

Competitive participations in Panhellenic Championships (pool & depth)

– Participation at the Panhellenic pool championships of AIDA Hellas in 2017, 2018.

– Participation at the Panhellenic depth championship of AIDA Hellas in 2017.

– Participation at the Panhellenic pool championship of CMAS – EOUDA in 2020, 2022, 2023, 2024

Competitive distinctions 2017

Onebreath Winter Pool Games

– 2nd place in dynamic apnea without fins (DNF) in the category of newcomers.

– 3rd place in static apnea in the category of newcomers.

Panhellenic Pool Championship of AIDA Hellas

– 4th place in dynamic apnea without fins (DNF).

Panhellenic Depth Championship of AIDA Hellas

– 3rd place in constant weights without fins (CNF).

Authentic Big Blue – Depth Competition

– 10th place (Overall Ranking) with 100 points, in a total of 29 men.

Competitive distinctions 2018

Onebreath Summer Pool Games

– 3rd place in dynamic apnea without fins (DNF).

Competitive distinctions 2019

Tripoli Apnea Competition

– 3rd place in dynamic apnea without fins (DNF).

Competitive distinctions 2020

Panhellenic Pool Championship of CMAS – EOUDA

– 1st place in dynamic apnea without fins (DNF).

Competitive distinctions 2022

Onebreath Winter Pool Games